Bret Taylor's Sierra, which sells AI customer service agents, raised a $950M Series E led by Tiger and GV at a $15.8B post-money valuation, up from $10B in 2025 (Kate Rooney/CNBC)
Bret Taylor's AI startup Sierra, which provides AI-powered customer service agents, has raised $950 million in a Series E funding round led by Tiger Global and GV. The round values the company at $15.8 billion post-money, up from a $10 billion valuation in 2025. The investment highlights continued strong interest in AI-driven enterprise solutions.
- ▪Bret Taylor's Sierra raised $950 million in a Series E funding round.
- ▪The round was led by Tiger Global and GV.
- ▪Sierra's post-money valuation is now $15.8 billion, up from $10 billion in 2025.
- ▪Sierra specializes in AI customer service agents.
- ▪The funding reflects growing investor confidence in AI for enterprise applications.
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